DOMESTIC bliss – or the lack of it – has long been a rich mine for comedy writers. Life Of Riley (BBC1, 8pm) is the latest creation to spring from it, and not only does it have a great premise, it sees the return of super actress Caroline Quentin to the BBC.

She's back on light-hearted territory here, playing Maddy, a woman who has just remarried and is finding out how problematic life can be when your family doubles in size.

She's back on light-hearted territory here, playing Maddy, a woman who has just remarried and is finding out how problematic life can be when your family doubles in size.

In last week's opening edition, the matriarch was surprised to find a pregnancy test, but got a shock when she realised who it was for.

Here, the complications continue as the fall-out from the move gathers pace. Half the possessions have gone missing between abodes, as has the cat, and the baby's cot has been made from an old crate. Things look set to get even more tricky as Maddy and husband Jim (Neil Dudgeon) are forced to get used to a new home, new neighbours – and each other's kids.

While Matt Allwright and Dan Penteado take great delight in naming and shaming dodgy tradesmen in Rogue Traders, Melinda Messenger and Dominic Littlewood go one better as they come to the rescue of homeowners let down by shoddy workmen in Cowboy Builders (five, 8pm).

Across the country, rogue builders are causing devastation and dismay, as they leave behind a pile of rubble, financial angst and heartache.

With more than 10 years' experience as a property developer, Melinda is just the person to oversee a dream makeover, while Dominic is like a man possessed as he hunts down the cowboy builders who've left their clients out of pocket.

Tonight Melinda and Dominic travel to Bath, where single mum Jenni Rossi has hit rock bottom after shelling out nearly £30,000 to pay for a large open-plan kitchen extension.

The 46-year-old school secretary and her teenage son have been living in little more than a building site since the cowboy builder did a runner six months ago.

Luckily, help is at hand as Melinda and Dominic get cracking, but they soon uncover a number of fundamental flaws which will take even more time and money to correct.

It's now over a decade since the death of Diana, Princess of Wales, but she's still capable of making the headlines.

The media obsession with her even made a star of her butler, Paul Burrell, pictured, who had been dubbed Diana's ‘rock'.

Over the past 11 years, his own story has proved every bit as a dramatic as his former employer's, as he's found himself in court, at the top of the bestseller list and on reality TV.

In Paul Burrell: What Really Happened (Channel 4, 10pm), Jacques Peretti tries to find out what drives the ex-servant, who seems to have become a master of reinvention, and whether he is still keeping secrets. What did the butler really see?

KEVIN Bacon and Fred Ward are an endearingly goofy pair of handymen who discover that huge underground worms have broken through the Earth's surface and are now swallowing up everything in their path. Add to that a refreshingly tough and intelligent female lead (Finn Carter) and the result is the sharpest and funniest monster movie in years.